Trypanosomes - Chagas

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Trypanosoma cruzi is a species of parasitic euglenoid trypanosomes. The species causes the trypanosomiasis diseases in humans and animals in America. Transmission occurs when the reduviid bug deposits feces on the skin surface and subsequently bites; the human host then scratches the bite area and facilitiates penetration of the infected feces.
Human American Trypanosomiasis, or Chagas disease, is a potentially fatal disease of humans. It has two forms, a trypomastigote found in human blood and an amastigote found in tissues. The acute form usually goes unnoticed and may present as a localized swelling at the site of entry of the parasites in the skin. The chronic form may develop 10 to 20 years after infection. This form affects internal organs (e.g. the heart, esophagus, colon and the peripheral nervous system). Affected people may die from heart failure.



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